Pictures of the Week 27 September to 3 October: Best Photos of Past Seven Days

An estimated 35,000 Pacific walruses gather on a beach in north-west Alaska. The US National Oceanic and Atmospheric Administration (NOAA) photographed the enormous herd near Point Layon the shores of the Chukchi SeaNOAAA man inserts a live snake into his nose and out through his mouth during a performance at an amusement park in Jinhua, Zhejiang province to celebrate the 65th anniversary of the founding of the People's Republic of ChinaReutersA bulldog named Tillman rides a wave during the 6th Annual Surf Dog competition at Huntington Beach, CaliforniaAFPUlet Ifansasti/Getty ImagesBase jumper John Snurkowski leaps from the 300-metre high open deck of the Kuala Lumpur Tower. Some 100 professional base jumpers from 20 countries took part in the annual base jumping eventAFPSouth Korea's bronze medallist Woo Haram competes in the men's 1m springboard diving final during the 17th Asian Games in IncheonReutersChinese gold medallist Shi Tingmao competes in the women's 1m springboard diving final at the Asian Games in Incheon, South KoreaReutersUS actor and former California governor Arnold Schwarzenegger poses with contestants during the Arnold Classic Europe bodybuilding competition in MadridAFPGeorge Clooney and his wife Amal Alamuddin leave the seven-star hotel Aman Canal Grande Venice.ReutersRodriguez-Gerada's six-acre portrait - Out of Many, One - is exhibited on the National Mall in Washington DCReutersRoads are illuminated on the eve of China's National Day holiday in ShanghaiAFPA tourist takes photos of a display of the Aurora Borealis (Northern Lights) over the Bals-Fjord near the village of Mestervik in northern NorwayReutersThe Milky Way is pictured in this photo taken by Nasa astronaut Reid Wiseman on the International Space StationReutersA US Air Force B-1B Lancer supersonic bomber flies over northern Iraq after conducting air strikes in Syria against Isis targetsReutersA US Air Force KC-10 Extender refuels an F-22 Raptor fighter aircraft prior to strike operations in SyriaReutersPalestinians light a fire in an area of Gaza City that was devastated during the seven-week Israeli offensiveReutersDevotees light oil lamps while offering prayers during the Navratri Hindu festival in Bhaktapur, NepalReutersHindu devotees perform Garba, a traditional folk dance, during the celebrations to mark the Navratri festival at Surat in the western Indian state of GujaratReutersPilgrims walk counter-clockwise around the Kaaba while others stop to touch itReutersPalestinian children walk around a model of the Kaaba during a re-enactment of the annual Hajj pilgrimage to Mecca, at their school in the West Bank city of NablusReutersUltra-Orthodox Jews pray along the Ayarkon River in Ramat Gan near Tel Aviv during the Tashlich ritual in which believers cast their sins into the water before the Day of Atonement or Yom KippurAFPGalatasaray fans light flares during the Uefa Champions League against Arsenal at the Emirates Stadium in LondonGettyPolice fire tear gas into a crowd of pro-democracy protesters near the Hong Kong government headquartersAaron Tam/AFPProtesters walk along a street after heavy rain and thunderstorms near the government headquarters building in Hong KongReutersPro-democracy demonstrators hold up their mobile phones during a protest near the Hong Kong government headquartersDale de la Rey/AFPRiot police use pepper spray as they clash with protesters outside the government headquarters in Hong KongReutersParamilitary policemen salute as they attend a flag-raising ceremony to mark the 65th anniversary of the founding of the People's Republic of China, in Nanjing, Jiangsu provinceReutersPrime Minister David Cameron prepares his keynote speech in his hotel room in Birmingham during the Conservative Party ConferencePeter Macdiarmid/GettySatirical artist Kaya Mar displays his latest works depicting Boris Johnson and David Cameron outside the venue of the Conservative Party conference in BirminghamAFPA man sleeps on the grass outside the Conservative Party Conference venue in BirminghamDarren Staples/ReutersA man passes a bag, delivered by the Red Cross and the North Texas Food Bank, to the unit at The Ivy Apartments complex where a man diagnosed with the Ebola virus is staying, in Dallas, Texas. Up to 100 people may have had direct or indirect contact with the first person diagnosed with Ebola in the United States, and four people have been quarantined in a Dallas apartmentReutersA health worker pushes a wheelbarrow containing a sick woman thought to be suffering from Ebola, at a treatment centre in Monrovia, LiberiaAFP